Eddy t



(No Model.)

B. T. THOMAS.

SEWING MACHINE. No. 266,553. Patented Oct. 24, 1882 WEFEEEEE l'lT/ar hjvfi g fi 00) 7.- r/m/nns W r rvg ggrns" N. PETERS Phulo-Lil'w nphur. wmin iun, nv c4 UNITED STATES PATENT OFFICE.

EDDY '1. THOMAS, OF NEW YORK, N. Y., ASSIGNOR TO THE 0. W. WILLIAMS MANUFACTURING COMPANY, OF MONTREAL, CANADA.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 266,553, dated October 24, 188.2.

(No model.)

To all whom it may concern Be it known that I, EDDY T. THOMAS, of New York, county and State of New York, have invented an Improvement in Sewing-Machines,

5 of which the following description, in connection with the accompanying drawings, is a specification.

This invention in sewing-machines has for its object certain improvements in mechanism for automatically lifting the presser-foot while the needle is in the material and just as the usual four-motioned feeding device, located below the material, reaches the end of its backstroke, which is of advantage when braiding 1 or embroidering.

My invention consists essentially in a cam and a lever actuated thereby, having an adjustable pivoted fulcrum, combined with the presserfoot-raising lever, adapted to engage a pin or projection on or connected with the pressenbar and lift the pressenfoot, substantially as will he described.

Figure 1 represents in front elevation the head of a New Home sewing-machine, the

2 face or cover plate of the head being taken off to show the disk which carries the needle-bar and its actuating crank-pin, and my improved devices for lifting the presser-bar at each revolution of the needle-bar-operating shaft; and

0 Fig. 2, an inner side view of part of the face or cover plate removed from Fig. l, to show the presser-foot bar carried by it, and the usual hand-lever for lifting the presser-foot.

The head a has within it the disk I), provided at its front with the usual crank-pin, 0, (shown in dotted lines,) which enters a groove in the cross-head 2 and reciprocates the needle-bar in the usual manner. This disk I), at its periphery, is made cam-shaped, the highest point or greatest diameter of the said cam being at W. This cam, by its action on the short end of the auxiliary liftinglever a, pivoted at e on the adjustable linkf, having its fulcrum at f, turns the said lever on its fulcrum 0 once during each rotation of the cam and reciprocation 5 of the needle-bar. lhe end of the long arm of lover a is extended under a pin or projection,

71-, of the usual hand-operated presser-foot-lifting lever, i, pivoted at 3 on the cap or cover plate a of the head a. The movement of lever 0 2' about its fulcrum causes its edge 4, acting against the pin k of the presser-bar, to lift the presser bar and foot more or less from the work under it while the needle is in the material, the needle serving as a pivot for the said material. This is done automatically by the movement of lever e in engagement with pin h of the usual hand-lever, t'.

To lift the presser more or less for each stitch the lever 0 may be adjusted or moved by the adjusting device 9, (shown as a screw,) acting against the linkf, carrying thepin which serves as the fulcrum for lever c.

The presser-foot has been lifted automatically at each stitch in many different ways; so

EDDY T. THOMAS.

Witnesses:

W. H. SidsToN, B. J. NoYEs. 

